Question # 1

The atomic radius of hydrogen is 37

Choose an answer

Pecometer

Manometer

Angstrom

Micrometer

Which is used for the reduction of aldehydes and ketones

Choose an answer

NaBH₄

Pt/Pd

Ni

All of these

Which metal is used for catalytic hydrogenation of oils

Choose an answer

Cu

Pt

Ni

Pd

Which teat is not given by both glucose and fructose

Choose an answer

Give yellow ppt of CHl₃with alkaline aqueous iodine

With 2, 4-DNPH give yellow ppt of hydrazone

Evolve H₂gas with Na metal

Oxidised with [Ag(NH₃)₂]⁺i.e. Tollen's reagent

Oxalic acid oxidizes to:

Choose an answer

CO

CO₂

Oxalates

None of these

Choose an answer

0

1

2

3

Monosaccharides belong to the group

Choose an answer

Lipids

Fats

Proteins

Carbohydrates

Acetic acids react with PCI5 giving:

Choose an answer

Acetamide

Acetyl chloride

Alcohol

Ether

5-d series is in the period :

Choose an answer

4th

5th

6th

7th

The best buffer is prepared when molar concentrations of the salt and acid are equal, then its pH and pKa value are related

Choose an answer

pH = pKa

pH < pKa

pH > pKa

pH x pKa = 14

Half life period of N₂O₅is 24 minutes and it remains same where we increase or decrease its initial concentration, then reactions

Choose an answer

Zero order

First order

Second order

Third order

Which of the following will have the highest boiling point at 1 atm pressure?

Choose an answer

0.1 M NaCl

0.1 M Sucrose

0.1 M BaCl₂

0.1 M Glucose

If initial concentration of the reactants and half life period of the reaction is known, then we can determine

Choose an answer

Average rate of reaction

Order of reaction

Rate constant k

Instantaneous rate

In sp²type hybridization the three equivalent sp²orbitals lie in the same plane and at angle of

Choose an answer

0°

60°

120°

180°

What is the packet of energy called?

Choose an answer

Electron

Photon

Positron

Proton

Dehydration of glycerol give

Choose an answer

Propane

Propene

Acrolein

Benzene

A compound containing carboxyl group in them are called:

Choose an answer

Ketone

Ether

Carboxylic acids

Polycarboxylic acid

Eletronegativity difference in C-C bond in alkanes is:

Choose an answer

Zero

Double

Half

4.0

The chemical reactivity of glass is reduced by the use of

Choose an answer

Fluxes

Formers

Stabilizers

None of these

Choose an answer

Condensation

Dehydration

Dehydrogenation

Hydrogenation

Two elements whose electronegativities are 1.2 and 3.0, the formed between them would be

Choose an answer

Ionic

Covalent

Coordinate

Metallic

A double bond consists of:

Choose an answer

Two sigma bonds

One sigma and one pi bonds

One sigma and two pi bonds

Two pi bonds

Bronze is an alloy which contains

Choose an answer

60% cu

70% cu

80% cu

99% cu

From the difference between expected bond energies for the normal covalent bond and experimentally determined values Pauling calculated the values of

Choose an answer

Ionization potential of elements

Electron affinity of elements

Electronegativity of elements

Bond length

Write the name of following alkene CH₂= CH - CH = CH₂

Choose an answer

1,3 butadiene

Butra -1, 3-diene

Both a & b

None

The nature of positive rays depend on:

Choose an answer

Nature of discharge tube.

Nature of resident gas.

Nature of electrode.

All of above.

According to Le-Chatelier's principal, adding heat to a solid and liquid in equilibrium will cause the

Choose an answer

Amount of solid to decrease

Amount of liquid to decrease

Temperature to rise

Temperature to fall

The best electrode used in salt bridge is KCl. Which other electrolyte an also be used for the purpose :

Choose an answer

NaCl

NH₄NO₃

KNO₃

NaNO₃

The reagents like KMnO_{4 and HCL cannot be filtered through Gooch crucible if its base is covered with :}

Choose an answer

Butterfly paper.

Ordinay paper.

Flying paper.

Filter paper.

Glacial acetic acid freezes to ice like solid at (°C)

Choose an answer

07

17

27

37

The solubility of a gas in water depends upon

Choose an answer

Nature of the gas

Temperature

Pressure of the gas

All of the above

More Classes

Other Links

ECAT Chemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer